SNMP scan failed: Cannot fetch system description OID .1.3.6.1.2. on Windows Server 2019

Troubleshooting
1

Hi All,

I’m trying to monitor a Windows Server 2019 with SNMP. I have activated the SNMP service on Windows but the scanning cannot find services .On checkmk I applied the following configuration

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This is the debug :

$ cmk -D windows2

windows2
Addresses: 172.31.0.81
Tags: [address_family:ip-v4-only], [agent:no-agent], [criticality:prod], [ip-v4:ip-v4], [networking:lan], [piggyback:auto-piggyback], [site:monitoring], [snmp:snmp], [snmp_ds:snmp-v2]
Labels:
Host groups: check_mk
Contact groups:
Agent mode: No agent
Type of agent:
SNMP (Community: ‘public’, Bulk walk: yes, Port: 161, Backend: Inline)
Process piggyback data from /omd/sites/monitoring/tmp/check_mk/piggyback/windows2
Services:
checktype item params description groups

Any help is highly appreciated !
Regards
mau

2

What happens with a “cmk --debug -vvI windows2”?

But one question on the side - why do you want to use SNMP on a Windows machine?
The output is not really suitable for monitoring. It is more like “reading from a crystal ball” :slight_smile:

1 Like
3

Hallo Andreas,

Thank you for your reply! I am of the same opinion , it’s like keeping a Ferrari in the garage :slight_smile: but I have to test this configuration in a working environment.I applied in the menatime the following rule to suppress the error

checkmk
checkmk1474×918 61.6 KB

but the output is not encouraging :

cmk --debug -vvI windows2
Discovering services and host labels on: windows2
windows2:

  • FETCHING DATA
    Source: SourceType.HOST/FetcherType.SNMP
    [cpu_tracking] Start [7f0c74105520]
    Loading autochecks from /omd/sites/monitoring/var/check_mk/autochecks/windows2.mk
    [SNMPFetcher] Fetch with cache settings: SNMPFileCache(base_path=PosixPath(’/omd/sites/monitoring/tmp/check_mk/data_source_cache/snmp/windows2’), max_age=MaxAge(checking=0, discovery=120, inventory=120), disabled=False, use_outdated=False, simulation=False)
    Not using cache (Too old. Age is 33628 sec, allowed is 120 sec)
    [SNMPFetcher] Execute data source
    SNMP scan:
    Skipping system description OID (Set .1.3.6.1.2.1.1.1.0 and .1.3.6.1.2.1.1.2.0 to “”)
    Using cached OID .1.3.6.1.2.1.1.1.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.1.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.1.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.1.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.1.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.1.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.1.0: ‘’
    Getting OID .1.3.6.1.4.1.1139.21.2.2.8.1.*: Executing SNMP GETNEXT of .1.3.6.1.4.1.1139.21.2.2.8.1 on windows2
    => [None] None
    failed.
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.1.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.1.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’
    Using cached OID .1.3.6.1.2.1.1.2.0: ‘’

( truncated )

SNMP scan found hr_mem snmp_info snmp_os snmp_uptime
Trying to acquire lock on /omd/sites/monitoring/tmp/check_mk/snmp_scan_cache/windows2.172.31.0.81
Got lock on /omd/sites/monitoring/tmp/check_mk/snmp_scan_cache/windows2.172.31.0.81
Releasing lock on /omd/sites/monitoring/tmp/check_mk/snmp_scan_cache/windows2.172.31.0.81
Released lock on /omd/sites/monitoring/tmp/check_mk/snmp_scan_cache/windows2.172.31.0.81
hr_mem: Fetching data (SNMP walk cache is disabled)
Executing BULKWALK of “.1.3.6.1.2.1.25.2.3.1.2” on windows2
ERROR: SNMP error 0/-24 (Timeout)
[cpu_tracking] Stop [7f0c74105520 - Snapshot(process=posix.times_result(user=0.27, system=0.010000000000000009, children_user=0.0, children_system=0.0, elapsed=60.349999997764826))]
Trying to acquire lock on /omd/sites/monitoring/var/check_mk/crashes/base/245590c4-2d89-11ec-ba71-712e4369e3be/crash.info
Got lock on /omd/sites/monitoring/var/check_mk/crashes/base/245590c4-2d89-11ec-ba71-712e4369e3be/crash.info
Releasing lock on /omd/sites/monitoring/var/check_mk/crashes/base/245590c4-2d89-11ec-ba71-712e4369e3be/crash.info
Released lock on /omd/sites/monitoring/var/check_mk/crashes/base/245590c4-2d89-11ec-ba71-712e4369e3be/crash.info
Traceback (most recent call last):
File “/omd/sites/monitoring/lib/python3/cmk/fetchers/snmp.py”, line 342, in _fetch_from_io
_from, until, _section = persisted_sections[section_name]
File “/omd/sites/monitoring/lib/python3/cmk/fetchers/cache.py”, line 42, in getitem
return self._store.getitem(key)
KeyError: SectionName(‘hr_mem’)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File “/omd/sites/monitoring/bin/cmk”, line 92, in
exit_status = modes.call(mode_name, mode_args, opts, args)
File “/omd/sites/monitoring/lib/python3/cmk/base/modes/init.py”, line 69, in call
return handler(*handler_args)
File “/omd/sites/monitoring/lib/python3/cmk/base/modes/check_mk.py”, line 1542, in mode_discover
discovery.do_discovery(
File “/omd/sites/monitoring/lib/python3/cmk/base/discovery.py”, line 370, in do_discovery
fetcher_messages=list(
File “/omd/sites/monitoring/lib/python3/cmk/base/checkers/_checkers.py”, line 247, in fetch_all
raw_data = source.fetch()
File “/omd/sites/monitoring/lib/python3/cmk/base/checkers/_abstract.py”, line 163, in fetch
return fetcher.fetch(self.mode)
File “/omd/sites/monitoring/lib/python3/cmk/fetchers/_base.py”, line 259, in fetch
return result.OK(self._fetch(mode))
File “/omd/sites/monitoring/lib/python3/cmk/fetchers/_base.py”, line 277, in _fetch
raw_data = self._fetch_from_io(mode)
File “/omd/sites/monitoring/lib/python3/cmk/fetchers/snmp.py”, line 348, in _fetch_from_io
fetched_data[section_name] = [
File “/omd/sites/monitoring/lib/python3/cmk/fetchers/snmp.py”, line 349, in
snmp_table.get_snmp_table(
File “/omd/sites/monitoring/lib/python3/cmk/snmplib/snmp_table.py”, line 55, in get_snmp_table
table_data = _get_snmp_table(
File “/omd/sites/monitoring/lib/python3/cmk/snmplib/snmp_table.py”, line 99, in _get_snmp_table
rowinfo = _get_snmpwalk(
File “/omd/sites/monitoring/lib/python3/cmk/snmplib/snmp_table.py”, line 205, in _get_snmpwalk
rowinfo = _perform_snmpwalk(section_name, base, fetchoid, backend=backend)
File “/omd/sites/monitoring/lib/python3/cmk/snmplib/snmp_table.py”, line 221, in _perform_snmpwalk
rows = backend.walk(
File “/omd/sites/monitoring/lib/python3/cmk/fetchers/cee/snmp_backend/inline.py”, line 200, in walk
raise MKSNMPError(
cmk.utils.exceptions.MKSNMPError: SNMP Error on windows2: SNMP query timed out after 4 tries within 4.00 seconds

Thanks in advance for your help!

mau

4

I always forget it…Windows wants always its reboot :slight_smile: I didn’t do it after SNMP service installation , but maybe it happens only for Windows VM as mine . Now it works perfectly !
Thanks a lot,
Mau

5

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